Encode and decode RFC 4648 Base32 strings and 2FA / TOTP authentication secret keys.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Choose between Encode Text to Base32 or Decode Base32 to Text.
Type or paste your text string or RFC 4648 Base32 encoded token.
Copy the processed output directly to your clipboard.
Base32 uses a 32-character alphabet (A-Z, 2-7) designed to be human-readable and case-insensitive, commonly used in 2FA authenticator seeds (Google Authenticator) and DNS labels.
Base32 uses only uppercase letters and digits 2-7, avoiding visually ambiguous characters like '0', 'O', '1', 'I', making it easier to read and transcribe manually.
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